Few ideas have been more thoroughly discredited and rejected by history than those of Karl Marx. All the major nations which once adhered officially to Marxism have abandoned that model. It's not surprising.
Frankly, the remedies Marx proposed for the ills of the world now sound a bit demented. He thought we should abolish private property. People should not be allowed to own things. At certain moments one can sympathise. But it's like wanting to ban gossip or forbid watching television. It's going to war with human behaviour. And Marx believed the world would be put to rights by a dictatorship of the proletariat; which does not mean anything much today.